Screw locking links are used in lots of applications and properly sized and secured they work fine...often used on trailer chains in my experience.
I wouldn't use them on sail sheets either but in hauling, hoisting and salvage have used them a lot.
Screw-links / Rapides
Screw-links are great for rigging because they are
very strong and not prone to failure due to incorrect loading, particularly where their orientation can be controlled so the sleeve is not loaded. Screw-links don't unscrew readily and can be secured with a spanner or thread adhesive. As well, they are good value for money.
Screw-links from Maillon Rapide | Connectors & Karabiners
just one of dozens of manufactures or sellers describing their use in rigging, climbing, rescue work...etc...etc...
I wouldn't hesitate using one for temporary work as long as a properly sized or oversized one would fit my rode.